> Vapor or EM or even air curtain-like heat shimmer generators, anything that obscures line of sight... I’m reminded of The Diamond Age, where nanomachines for

> Vapor or EM or even air curtain-like heat shimmer generators, anything that obscures line of sight... I’m reminded of The Diamond Age, where nanomachines form barely-visible curtains to keep other nanomachines out. A dome of them could work as a two-way mirror of sorts, letting insiders look out but blocking things from looking in.